Abstract：During the blast furnace iron making process, the potassium, sodium and zinc in iron ore will react with refractory bricks in blast furnace, leading to the fracture of bricks and in severe case. As a result, the blast furnace production is influenced. In order to guarantee the stable and smooth production of blast furnace iron making, the contents of potassium, sodium and zinc in iron ore should be rapidly and accurately determined. The samples were grinded and sieved with 200-mesh (74μm) sieve. The sample was then prepared using pressing machine at pressure of 30t for 30s. The contents of potassium, sodium and zinc in iron ore were determined by X-ray fluorescence spectrometry (XRF). The precision test was conducted using one same iron ore sample. The relative standard deviation (RSD, n=11) of determination results was 1.3%, 1.5% and 2.8% for potassium, sodium and zinc, respectively. The standard sample of iron ore was analyzed according to the experimental method, and the found results were consistent with the certified values. The relative error was within the allowable range.
张永顺, 孙雪涛, 袁辉, 杨刚. 压片制样-X射线荧光光谱法分析铁矿石中钾钠锌[J]. 冶金分析, 2019, 39(1): 72-76.
ZHANG Yong-shun, SUN Xue-tao, YUAN Hui, YANG Gang. Determination of potassium, sodium and zinc in iron ore by X-rayfluorescence spectrometry with pressed powder pellet. , 2019, 39(1): 72-76.
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